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BB AtomicAge Study
Berean Builders Science in the Atomic Age Chapter 9 Study Questions
| Question | Answer |
|---|---|
| from atoms to tissues, list natures levels of organization that we have learned about so far in order. | atoms. molecules, cell organelles, cells, tissues |
| what fact allows a scientist to identify different tissues using a microscope? | the cell that makes up different tissues look different |
| what do soft octeocytes, red blood cells, and delicate vein valves in dinosaur fossils indicate about the fossils age? | they indicate that the fossils cant be millions of years old |
| what does hydroxyapatite do for bone tissue? what does collagen do? | hydroxyapatite makes bone tissue hard and strong, while collagen makes the bone tissue more flexible |
| what do we call hydroxyapatite and collagen mixture that exits between bone cells? | bone matrix |
| what are the three types of bone cells, and what do they do? | osteobalsts make new bone matrix and puts it where it belongs, osteocytes maintain the existing bone matrix, and osteoclasts break down the bone matrix |
| compare compact bone tissue to spongy bone tissue. | compact bone tissue has the cells packed tightly, makin hard, heavy bones. spongy bone tissue has holes in it, making lighter, less strong bones |
| what are the four general types of tissue in the human body? | epithelial tissue, connective tissue, muscle tissue, and nerve tissue |
| what are the three kinds of muscles, and what do they do? | skeletal muscles move the skeleton, smooth muscles operate the organs, and cardiac muscles operate the heart |
| which of these types of muscles are voluntary? ( skeletal, smooth, or cardiac) | skeletal |
| which of these types of muscles are involuntary? ( skeletal, smooth, or cardiac) | smooth and cardiac muscles |
| what connects muscle to bone | tendons |
| what does cartilage in a joint? | it covers the bones in the joint so that they don't scrape each other |
| what are the three functions of epithelial tissue? | protection, absorption, and secretion |
| which of the three functions are done by epithelial tissue in glands? | secretion |
| what is gastric juice? | it is the liquid found in the stomach |
| in general, what structures receive signals in a neuron? what structure sends signals away from the neuron? | most neurons sends signals through the dendrites and sends signals down the axon |
| what part of the neuron holds the nucleus and most of the organelles? | the cell body |
| what does the myelin sheath do for nerve signals? | it makes the signal travel down the axon faster |
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mbrennan262
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